40005113 has 2 divisors, whose sum is σ = 40005114. Its totient is φ = 40005112.

The previous prime is 40005109. The next prime is 40005143. The reversal of 40005113 is 31150004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31225744 + 8779369 = 5588^2 + 2963^2 .

It is a cyclic number.

It is not a de Polignac number, because 40005113 - 2² = 40005109 is a prime.

It is a super-2 number, since 2×40005113² = 3200818132285538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40005143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20002556 + 20002557.

It is an arithmetic number, because the mean of its divisors is an integer number (20002557).

Almost surely, 2^40005113 is an apocalyptic number.

It is an amenable number.

40005113 is a deficient number, since it is larger than the sum of its proper divisors (1).

40005113 is an equidigital number, since it uses as much as digits as its factorization.

40005113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 40005113 is about 6324.9595255622. The cubic root of 40005113 is about 342.0097605595.

Adding to 40005113 its reverse (31150004), we get a palindrome (71155117).

The spelling of 40005113 in words is "forty million, five thousand, one hundred thirteen".